![MC33978EK Allicdata Electronics](https://files.allicdata.com/upload/common/default.jpg)
Allicdata Part #: | MC33978EK-ND |
Manufacturer Part#: |
MC33978EK |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | NXP USA Inc |
Short Description: | IC INTERFACE SW DETECT 32-SOIC |
More Detail: | Multiple Switch Detection Interface 32-SOIC |
DataSheet: | ![]() |
Quantity: | 1000 |
1 +: | 0.00000 |
Series: | -- |
Packaging: | Tube |
Part Status: | Obsolete |
Applications: | Multiple Switch Detection |
Interface: | SPI |
Voltage - Supply: | 3 V ~ 5.25 V |
Package / Case: | 32-SSOP (0.295", 7.50mm Width) Exposed Pad |
Supplier Device Package: | 32-SOIC |
Mounting Type: | Surface Mount |
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The MC33978EK from ON Semiconductor is an integrated, automotive qualified, low voltage brushless DC motor driver. It is intended for use in low voltage applications such as automotive exterior personal mirror adjustment, automotive window regulators, automotive sliding roofs, and other similar applications. The device is integrated with three power MOSFETs and one high side current sense MOSFET and one low side current sense MOSFET configured in an H-bridge topology. This allows the MC33978EK to control the operation of low voltage brushed DC motor in a variety of modes.
The MC33978EK features an integrated LCD boost to drive the 2x16 LCD display, three integrated Linear Voltage Regulators (LVRs) to regulate the positive and negative voltage rails, and two integrated low voltage differential signaling transceivers (LVDS) for interfacing with the host device. The device also comes with an integrated precision 12-Bit Analog to Digital Converter (ADC) for monitoring the various voltages, currents, and temperatures present on the device.
The device is designed for a range of applications including automotive window regulators, mirror adjustment, sliding roof control, and control of brushless DC motors in industrial applications. It has several safety features such as fault detection and low voltage protection, and provides bidirectional current sensing at true load current values up to 30A. The MC33978EK is also fully programmable via an SPI or an I2C interface.
The working principle of the MC33978EK is quite simple. The device consists of two motor terminals (Pin 1 and 2) and two power terminals (Pin 7 and 8). The two motor terminals (Pin 1 and 2) are connected to the low voltage DC motor, while the two power terminals (Pin 7 and 8) are connected to the vehicle’s battery. The main IC of the MC33978EK controls the voltage signal sent across pins 1 and 2 to cause the current to flow through the motor in either direction. This current is monitored through the high and low side current sense MOSFETs to detect overcurrent and undercurrent faults.
The MC33978EK also monitors the battery voltage at pin 8 and can shut down the circuit and latch when the battery voltage falls below the lower limit to prevent any unexpected issues. The device also has several protected, onboard measurement inputs for monitoring temperatures and voltages.
In short, the MC33978EK is an automotive qualified, low voltage brushless DC motor driver that is intended for use in applications such as automotive window regulators, mirror adjustment, sliding roof control, and control of industrial brushless DC motors. It features an integrated LCD boost, three integrated Linear Voltage Regulators, two integrated LVDS transceivers and one integrated 12-bit ADC. It offers easy programmability as well as overcurrent and undercurrent related safety features. This makes it ideal for a variety of automotive applications.
The specific data is subject to PDF, and the above content is for reference
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